|Check Point Reference:||CPAI-2005-238|
|Date Published:||2 Aug 2011|
|Last Updated:||22 Jun 2017|
|Protection Provided by:||
|Who is Vulnerable?|
|Vulnerability Description||MailEnable is a mail server application designed to run on the Microsoft Windows platform. MailEnable bundles a server component that supports the HTTPMail protocol. This protocol allows an email client, such as Outlook Express, to view, send, and manage electronic messages. The HTTPMail protocol is essentially a standard WebDAV (Web Distributed Authoring and Versioning) service.There exists a buffer overflow vulnerability in the way MailEnable processes the HTTPMail protocol. This issue is caused by insufficient boundary checking when data is copied into a fixed size buffer. This vulnerability can be exploited to execute arbitrary code on the target system with privileges of the HTTPMail service process.In a simple attack case aimed at creating a denial of service condition, the affected service will terminate. If the service is not configured to restart automatically, then the MailEnable HTTPMail functionality will be unavailable until the server is restarted manually.In a more sophisticated attack scenario, where the malicious user is successful in injecting and executing supplied code, the behaviour of the system is dependent on the nature the injected code. Any code injected into the vulnerable component would execute in the security context of the service process, normally System level.|
This protection will detect and block attempts to exploit this vulnerability.Note that in order for this defense to protect your MailEnable server, you will need to configure port 8080 (which is also the HTTP proxy port) to work with the HTTP protocol. You need to do the following:1. In the Services tree, click on TCP > HTTP_and_HTTPS_proxy. The TCP Service Properties window opens.2. Click on Advanced. Select the Protocol Type: HTTP.
In order for the protection to be activated, update your Security Gateway product to the latest IPS update.For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.
This protection's log will contain the following information:
Attack Name: Application Servers Protection Violation
Attack Information: MailEnable HTTP authorization header buffer overflow